JPH0137209B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for winding a rolled wire rod for the purpose of winding up a rolled wire rod sent from a finishing mill or the like at a high filling rate.

(Prior Art) Conventionally, when winding a rolled wire rod with a winder, the rolled wire rod sent out from a distant rolling mill is driven through a guide member at a driving angle such that the front side in the direction of travel is inclined downward, This downwardly inclined rolled wire rod is fed into the annular winding groove on the longitudinal axis of the winder, and the rotation of the winding groove fills the rolled wire rod winding groove. I was winding it up.

However, in the conventional configuration as described above, especially when the unit weight of the 3-ton rolled wire rod becomes large and the winding groove depth becomes deep, the rolled wire rod cannot sufficiently reach the bottom of the winding groove by the guide member. This has caused a problem in that the filling rate of the rolled wire rod, especially at the bottom of the winding groove, is reduced.

Therefore, in order to improve the filling rate of the wire, the rotation speed of the winding groove of the winding machine is changed periodically, and
A method has already been proposed in which the feeding rate of the wire rod is changed periodically to wind the wire rod at a high filling rate (for example, see Japanese Patent Publication No. 15861/1983).

That is, this conventional winding device holds the wire between a pair of delivery rolls and sends the wire to a winding groove at a predetermined angle, and also horizontally aligns the wire guide fitting provided downstream of the delivery rolls. The wire rod guided by the fitting is periodically moved toward and away from the winding groove, thereby changing the relative speed of the supplied wire rod to the winding groove and increasing the rotational speed of the winding groove. It was designed to change periodically.

(Problems to be Solved by the Invention) Since the conventional winding device described above changes the feeding speed of the wire through the rotational movement of the wire guide fitting, the wire may be damaged due to sliding contact between the fitting and the wire. It was easy to attach.

In addition, because the winding angle of the wire changes periodically due to the circular motion of the guide fitting, the pushing force of the wire into the winding groove changes, making it impossible to obtain a constant filling rate. .

Therefore, an object of the present invention is to solve the above-mentioned problems.

(Means for Solving the Problems) In order to achieve the above object, the method of the present invention is characterized in that the rolled wire from the winder is held between a pair of upper and lower delivery rolls, and The rolled wire rod is fed into the annular winding groove of the longitudinal axis of the winder at an initial angle such that the front side of the rolled wire rod is inclined downward in the direction of movement, and the tip of the rolled wire rod is approximately on the bottom surface of the winding groove. When the wire is reached, the rolled wire is rolled down by a pressure roll and further tilted downward to the winding angle, and under this winding angle, the rolled wire is wound into the winding groove by the rotation of the winding groove. and when the winding amount of the rolled wire rod is 90 to 95% of the total winding amount, the pressure of the press roll on the rolled wire rod is released and the rolled wire rod is sent into the winding groove at the initial angle. be.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

First, the method for winding the rolled wire rod 1 will be explained with reference to the figure. The rolled wire rod 1 from a rolling mill not shown in the figure, for example, a thick wire rod with a diameter of 25 mm to 38 mm, is held between a pair of upper and lower delivery rolls 2 and 3. At the same time, by rotationally driving the delivery rolls 2 and 3, the rolled wire 1 is sent out at an initial angle α such that the front side in the direction of movement thereof is inclined downward. In this case, for example, the advancing speed v of the rolled wire rod 1 is 5.2 to 12
m/sec, and the lead rate of the pinch rolls (not shown) interposed between the rolling mill and the delivery rolls 2 and 3 is:
It is 4 to 5% faster than the finish rolling speed, that is, it is expressed as (5.2 to 12 m/sec) x (1.04 to 1.05). Further, the initial angle α, that is, the angle formed between the rolled wire rod 1 and the horizontal line is approximately 30°.

Next, the rolled wire rod 1 sent out from the two delivery rolls 2 and 3 is rolled down by the press roll 4 and tilted further downward, and under this downwardly inclined winding angle β, the rolled wire rod 1 is transferred to the winder 5. The rolled wire rod 1 is fed into the annular winding groove 6 on the longitudinal axis thereof, and the rolled wire 1 is wound into the winding groove 6 by the rotation of the winding groove 6. In this case, the rotational speed R of the winding groove 6 is wave-adjusted with an amplitude of ±3% and a period of 5 to 6 seconds, so that the winding groove 6 is filled with the rolled wire 1 as uniformly as possible.

At the start of the winding operation, when the tip of the rolled wire rod 1 almost reaches the bottom of the winding groove 6, the press roll 4 can be lowered to roll down the rolled wire rod 1 and tilt it downward to the winding angle β. preferable. In this case, the means for detecting that the tip of the rolled wire rod 1 has reached the bottom surface of the winding groove 6 is as follows. That is, the passage of the tip of the rolled wire 1 is detected by a photoelectric tube at the entrance of the pinch roll, and the time required for the tip to reach the bottom of the winding groove 6 is calculated to issue a rolling command to the press roll 4. be.

On the other hand, at the end of the winding operation, the rolled wire rod 1
When the winding amount is 90 to 95% of the total winding amount, it is preferable to release the pressure of the press roll 4 on the rolled wire rod 1 and feed the rolled wire rod 1 into the winding groove 6 at an initial angle α. In this case, the means to detect that the amount of winding is 90 to 95% of the total amount of winding is to calculate the total length of wire 1 and 90 to 95% of it based on the unit weight of the material, and calculate the winding time. , and issues a command to raise the pressure roll 4. That is, the winding start point is detected by a phototube at the entrance of the pinch roll, and the pressure roll 4 is detected at a point of 90 to 95% of the total winding amount calculated in advance.
This is to issue an order to raise the temperature.

Another method is to detect the rear end of the wire 1 and issue a command to raise the pressure roll 4, but this is too slow in terms of timing, so when this method is adopted, the position of the detection phototube is A point at least 30 m or more in front of the winder and behind the exit side of the finishing rolling mill is desirable.

In the illustrated example, the press roll 4 moves up and down in a direction perpendicular to the rolled wire rod 1 having an initial angle α on a perpendicular plane, and its moving speed is 1 to 10
mm/sec, preferably approximately 3.5 mm/sec,
In addition, the stroke is such that the pressing surface of the pressing roll 4 moves from the upper limit position of 20 mm in the moving direction to the rolled wire rod 1 having the initial angle α to 70 mm in the same moving direction.
mm, preferably 45 to 58 mm downward in the same movement direction from the upper limit position.

During the above-mentioned winding operation, the axis of the rolled wire 1 is made to substantially coincide in plan view with the tangent of the intermediate circle 7 which is concentric with the winding groove 6 and passes through the approximate center of the winding groove 6 in the groove width direction. It is preferable to feed the wire 1 into the winding groove 6. In this case, the axis of the rolled wire rod 1 having an initial angle α,
The contact position of the intermediate circle 7 is located below the upper end of the winding groove 6.

Next, a description will be given of a device directly used for carrying out the above-mentioned winding method. Reference numeral 8 is a driving device for feeding the rolled wire 1 sent out from a rolling mill (not shown) into a boring reel type winding machine 5. The driving device 8 includes a base 9 that is a fixed side, a first case 10 that is placed on the base 9 so as to be slidable in the lateral direction with respect to the axis of the rolled wire rod 1, and a first case 10 that is attached to the first case 10. It has a second case 12 that is pivotally supported via a pivot shaft 11 so as to be vertically swingable.

An upper support shaft 13 extending laterally to the axis is mounted on the second case 12, and an upper delivery roll 2 having a circumferential groove 14 is fixed to the end of the support shaft 13 projecting from the second case 12. The case 10 is provided with a lower support shaft 15 and a lower delivery roll 3 having the same structure as described above, and the upper and lower delivery rolls 2 and 3 have the same shape and size and are arranged correspondingly in the vertical direction. 2nd case 1
2 is pressed by an air cylinder 16 so that the upper delivery roll 2 approaches the lower delivery roll 3, and is provided with a stopper member 17 that adjustably defines this minimum approach distance.

The stopper member 17 is slidable on the first case 10 and has an engaging portion 1 fixed to the second case 12.
a tapered member 19 that abuts on the tapered member 1;
It is composed of a bolt body 20, a lock nut 21, etc., which allows adjustment and movement of the bolt body 9, and a lock nut 21, etc., and by twisting the bolt body 20 and moving the taper member 19, the contact position of the engaging portion 18 with respect to the taper member 19 can be changed up or down. This makes it possible to adjust the minimum approach distance.

The lower support shaft 15 is connected to a reducer 23 via a first universal joint 22 that is axially expandable in the lateral direction of the axis, and the reducer 23 is connected to a first electric motor 25 (not shown) via a second universal joint 24. be done.

The rolled wire rod 1 sent out from the rolling mill is inserted between the circumferential grooves 14, 14 of the upper and lower delivery rolls 2, 3, and is held between the circumferential grooves 14, 14 by the operation of the air cylinder 16.
Then, the lower delivery roll 3 is rotationally driven by the operation of the first electric motor 25, and the rolled wire 1 is delivered so that the front side in the direction of movement thereof is inclined downward. That is, both delivery rolls 2, which pass through the center point of the upper and lower delivery rolls 2, 3,
The rolled wire rod 1 is sent out in the tangential direction of 3, and the angle between the rolled wire rod 1 and the horizontal line in this case becomes the initial angle α.

A lifting device for the press roll 4 is provided at the front of the first case 10 . That is, the upper and lower delivery rolls 2,
A worm wheel 26 is mounted around an axis parallel to a line connecting the centers of the worm wheels 2 and 3.
A bolt body 28 is screwed into a screw hole 27 on the axial center of the bolt body 28, a support shaft 29 is mounted on the upper part of the bolt body 28, and a press roll 4 is fixed to the protruding end of the support shaft 29. .

The press roll 4 is located in front of both the delivery rolls 2 and 3 and above the rolled wire rod 1 sent out from both the delivery rolls 2 and 3. Worm wheel 2 above
6 is engaged with a worm 30 extending laterally to the axis, and the worm gear 30 is connected to a first gear box 32 via a third universal joint 31. Furthermore, the first gear box 32 is connected to a fourth universal joint 33 and a second gear box 34. It is connected to the second electric motor 35 via etc. The first gearbox 32 is placed on a bracket 36 protruding from the first case 10. The second gearbox 34 is connected to a rotary limit switch 38 via a speed reducer 37.

However, by the operation of the second electric motor 35, the first and second
The worm wheel 26 is rotated via the gearboxes 32, 34, the worm 30, etc., thereby the bolt body 28 is moved downward in the axial direction, the press roll 4 interlocked with this moves downward, and both delivery rolls The rolled wire rod 1 sent out from 2 and 3 is rolled down. As a result, the angle formed between the rolled wire rod 1, which is tilted further downward, and the horizontal line becomes the winding angle β. In this case, the vertical movement position of the pressure roll 4 is controlled by a rotary limit switch 38.

Both the delivery rolls 2 and 3 and the pressure roll 4 are covered with a cover member 40 so as to be openable and closable, and the cover member 40 has a truncated head for guiding the rolled wire 1 from the rolling mill between the delivery rolls 2 and 3. Conical guide body 4
1 is provided.

A winder 5 is disposed in front of the rolled wire 1 that passes through the two delivery rolls 2, 3 and the press roll 4, and the winder 5 has an annular winding groove 6 that is rotatable about a vertical axis.
is formed. The winding groove 6 has, for example, diameters 42 and 43 of opposing peripheral walls of 1000 mm and 1400 mm, respectively, and a groove depth 44 from the top surface to the bottom surface of 2000 mm. In addition, in the illustrated example, an intermediate circle 7 in which the axis of the rolled wire rod 1 is concentric with the winding groove 6 and passes approximately through the center of the winding groove 6 in the groove width direction.
When viewed from above, it is made to substantially coincide with the tangent line of .

The first case 10 is connected via the cylinder 46,
The first universal joint 22 is movable in the axial direction, and first and second strikers 47 and 48 are fixed to a bracket 36 accompanying the joint, and a first striker 47 and a second striker 48 are attached to the fixed side corresponding to these strikers 47 and 48.・Second
Limit switches 49, 50 are provided, and these strikers 47, 48 and limit switches 49, 50 are provided.
50, the first case 10 can be positioned and fixed at the first and second positions. In the first position of the first case 10, each roll 2, 3 is located on the axis of the rolled wire rod 1 from the rolling mill in plan view, as shown in the figure, and in the second position, each roll 2, 3, and 4 are configured to retreat toward the outside of the rolled wire rod 1.

An experimental example of the present invention based on the above configuration is as follows.

[Experiment conditions]

1 Winding groove shape Diameter of facing peripheral wall (large diameter) 1400mm 〃 (small diameter) 1000mm Winding groove depth 2000mm 2 Rolled wire external diameter φ32mm Driving speed 7.4m/sec Initial angle 30° Winding angle 40~45゜3 Press roll rolling down timing: When the rolled wire rod reaches the bottom of the winding groove.

Rise timing: Winding amount is 90 to 95 of the total winding amount
When the percentage is reached.

Lifting speed 3.5mm/sec [Experimental results] The filling rate under the above conditions was 33-37% (average 35%)
%), which is an improvement in the filling rate compared to the conventional configuration, which had a filling rate (average) of 30% or less, which in some cases made it impossible to wind up.

In addition, under the above experimental conditions, when the wire thickness is φ25 to φ38 mm, the filling rate of the winding coil is
33-37% (average 35%), wire thickness is φ33mm
The filling rate is highest near the area, and there is a tendency for the filling rate to decrease whether it is thinner or thicker than that.

(Effect of the invention) According to the invention, at the start of the winding operation,
Since the rolled wire rod 1 is fed into the winding groove 6 at an initial angle α, that is, at a relatively small angle, the rolled wire rod 1
When the tip of the winding groove 6 comes into contact with the bottom surface of the winding groove 6, generation of a large impact is avoided and a smooth winding start operation is performed.

In addition, during normal winding, the rolled wire rod 1 is rolled down and fed into the winding groove 6 at the winding angle β, that is, at a relatively steep angle, so that the rolled wire rod 1 is sufficiently attached to the bottom of the winding groove 6. As a result, the filling rate at the bottom of the winding groove 6 is particularly improved. Moreover, since the rolled wire rod 1 is rolled down by the press roll 4, the rolling resistance is small and the structure is simple, which is advantageous.

Further, at the end of the winding operation, the rolled wire rod 1 is returned to the initial angle α, so that the rolled wire rod 1 that is driven into the upper surface of the rolled wire rod 1 is smoothly superposed on the upper surface of the rolled wire rod 1.

Further, since the rolled wire rod 1 is fed into the winding groove 6 from approximately the center in the groove width direction of the winding groove 6, a substantially uniform filling rate can be obtained over the entire groove width direction, which is advantageous.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, and FIG. 1 is an overall plan view thereof, and FIG. 2 is a side view taken along the - line in FIG.
3 is a sectional view taken along the - line in FIG. 1, FIG. 4 is a sectional view taken along the - line in FIG. 3, and FIG. 5 is a sectional view taken along the - line in FIG. 1...Rolled wire rod, 2, 3...Upper and lower delivery rolls,
4... Press roll, 5... Winding machine, 6... Winding groove, 7... Intermediate circle, α... Initial angle, β... Winding angle.

Claims (1)

[Scope of Claims] 1. A rolled wire rod from a rolling mill is held between a pair of upper and lower delivery rolls, and the rolled wire rod is wound up at an initial angle such that the front side of the rolling wire is inclined downward by the rotational drive of the delivery rolls. When the tip of the rolled wire rod almost reaches the bottom of the winding groove, the rolled wire rod is rolled down by a pressure roll, and the winding angle is further tilted downward. let me,
Under this winding angle, the rolled wire is wound into the winding groove by the rotation of the winding groove, and when the winding amount of the rolled wire is 90 to 95% of the total winding amount, the rolling A method for winding a rolled wire rod, characterized in that the rolling of the press roll against the wire rod is released and the rolled wire rod is fed into the winding groove at the initial angle. 2. Feed the rolled wire into the winding groove by aligning the axis of the rolled wire rod concentrically with the winding groove, passing approximately through the center of the winding groove in the groove width direction and on a tangent to the intermediate circle in plan view. A method for winding a rolled wire rod according to claim 1.